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[rahul]

Interview Questions in Object Oriented Concepts (OOPS).These questions give an idea to crack the interview for the candidate.

How do you write a program which produces its own source code as its output?
How can I find the day of the week given the date?
Why doesn't C have nested functions?
What is the most efficient way to count the number of bits which are set in a value?
How can I convert integers to binary or hexadecimal?
How can I call a function, given its name as a string?
How do I access command-line arguments?
How can I return multiple values from a function?
How can I invoke another program from within a C program?
How can I access memory located at a certain address?
How can I allocate arrays or structures bigger than 64K?
How can I find out how much memory is available?
How can I read a directory in a C program?
How can I increase the allowable number of simultaneously open files?
What's wrong with the call "fopen("c:\newdir\file.dat", "r")"?
What is the output of printf("%d")
What will happen if I say delete this
Difference between "C structure" and "C++ structure".
Diffrence between a "assignment operator" and a "copy constructor"
What is the difference between "overloading" and "overridding"?
Explain the need for "Virtual Destructor".
Can we have "Virtual Constructors"?
What are the different types of polymorphism?
What are Virtual Functions? How to implement virtual functions in "C"
What are the different types of Storage classes?
What is Namespace?
What are the types of STL containers?.
Difference between "vector" and "array"?
How to write a program such that it will delete itself after exectution?
Can we generate a C++ source code from the binary file?
What are inline functions?
Talk sometiming about profiling?
How many lines of code you have written for a single program?
What is "strstream" ?
How to write Multithreaded applications using C++?
Explain "passing by value", "passing by pointer" and "passing by reference"
Write any small program that will compile in "C" but not in "C++"
Have you heard of "mutable" keyword?
What is a "RTTI"?
Is there something that I can do in C and not in C++?
Why preincrement operator is faster than postincrement?
What is the difference between "calloc" and "malloc"?
What will happen if I allocate memory using "new" and free it using "free" or allocate sing "calloc" and free it using "delete"?